I’ll give my own experience as a Steam customer and aspiring game dev:

I’ve never had a problem with Steam that wasn’t quickly and satisfactorily resolved. Usually, in ways that go above and beyond Valve’s stated responsibilities. They have been quick to respond to the two hardware tickets I’ve raised over the years of owning a Steam controller, two Steam Links, a Valve Index, and my own Steam Deck.

In the many years that I’ve used all flavors of Linux and installed all manner of native games and non-native games, it has only been in the last 4 or 5 years that the process has become, in my own experience, painless enough for me to not only consider suggesting other less technical people I know to try Linux, but to enthusiastically recommend it. They were the strongest single driving force I am aware of in bringing day-one mass-market release games to Linux.

I have, over the years of my dealing with them, come to believe that money spent towards Valve is materially making my life better in ways that just playing games through Steam doesn’t fully encapsulate.

They provide development assistance and funds for open source projects in a way that truly gives back to the projects they work with, their company is run in a way that I find personally satisfying and aspirational, their leadership feels like they’re maintaining their relevance in the industry instead of being disconnected money-men…

I respect their decisions enough to consider their cut reasonable as compared to the services they provide both directly and indirectly to the PC gaming industry as a whole.